Haojian Wu f2879d8a48 [clang-tidy] Add fix descriptions to clang-tidy checks. ... Summary: Motivation/Context: in the code review system integrating with clang-tidy, clang-tidy doesn't provide a human-readable description of the fix. Usually developers have to preview a code diff (before vs after apply the fix) to understand what the fix does before applying a fix. This patch proposes that each clang-tidy check provides a short and actional fix description that can be shown in the UI, so that users can know what the fix does without previewing diff. This patch extends clang-tidy framework to support fix descriptions (will add implementations for existing checks in the future). Fix descriptions and fixes are emitted via diagnostic::Note (rather than attaching the main warning diagnostic). Before this patch: ``` void MyCheck::check(...) { ... diag(loc, "my check warning") << FixtItHint::CreateReplacement(...); } ``` After: ``` void MyCheck::check(...) { ... diag(loc, "my check warning"); // Emit a check warning diag(loc, "fix description", DiagnosticIDs::Note) << FixtItHint::CreateReplacement(...); // Emit a diagnostic note and a fix } ``` Reviewers: sammccall, alexfh Reviewed By: alexfh Subscribers: MyDeveloperDay, Eugene.Zelenko, aaron.ballman, JonasToth, xazax.hun, jdoerfert, cfe-commits Tags: #clang-tools-extra, #clang Differential Revision: https://reviews.llvm.org/D59932 llvm-svn: 358576		2019-04-17 12:53:59 +00:00
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ApplyReplacements.cpp	[clang-tidy] Add fix descriptions to clang-tidy checks.	2019-04-17 12:53:59 +00:00